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Attackpoint - performance and training tools for orienteering athletes

Discussion: Awesome!

in: BorisGr; BorisGr > 2017-11-21

Nov 22, 2017 2:00 AM # 
j-man:
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Nov 22, 2017 8:29 AM # 
ndobbs:
Brilliant. It's impressive they did 2 extra kilomteres.
Nov 22, 2017 10:50 AM # 
bubo:
Well, considering the measured distance, a 5-10% deviation in the distance covered is quite normal in orienteering even when you try to go straight...
Nov 22, 2017 10:56 AM # 
bubo:
PS. There´s even a Strava segment if anyone wants to try to beat it ;)
Nov 22, 2017 10:58 AM # 
bubo:
On a related note: What would be the longest possible straight leg on the Harriman maps or thereabouts?
Nov 22, 2017 11:33 AM # 
Cristina:
Also curious about a NW-SE diagonal across all the Laramie maps. Looks like you could get at least 18km, though with a good chunk right by Happy Jack Rd.
Nov 22, 2017 1:44 PM # 
Jagge:
I believe certain Swedes who are used to think big are currently drawing lines like this.
Nov 22, 2017 1:49 PM # 
bubo:
@Jagge
If you read the notes on how they actually made their line up I don´t think your (interesting) example qualifies. One of the parameters to think of was that it should be possible to run within 100 m on each side of the line. Thus a line crossing open water features had to be avoided and modified until a possible passage was found...
Nov 22, 2017 1:53 PM # 
Jagge:
No problem, there will be ice soon.
Nov 22, 2017 1:58 PM # 
BorisGr:
I think a leg across Harriman could be in the vicinity of 18-20km, unless you go into West Point land. There are people (J-J?) who could figure this out more precisely...
Nov 22, 2017 2:12 PM # 
Jagge:
More serious note, 30 km straight mapped line without barriers is a lot. Most likely such think does not exists in Finland. Or one would have to use very old O maps, sort of just enhanced government maps form 60s. Or cheat one way or an other, like mapping some gaps or running over icy lakes. Something like 25 km may be doable.
Nov 22, 2017 2:33 PM # 
Cristina:
Terje claims there's an appropriate 32km line possible in Nordmarka in Oslo. It would be pretty tough!
Nov 22, 2017 9:33 PM # 
Pink Socks:
If you're wondering, you can't get any longer than 13589 km.
Nov 22, 2017 11:33 PM # 
bubo:
One of the other parameters was that it should be mapped for orienteering. I wonder if any part of the 13589 km above covers that?
Nov 23, 2017 2:14 AM # 
blairtrewin:
Not likely, except maybe in eastern China.

Finding 30km without physical barriers is no problem in Australia; finding O maps covering it is. (I have seen a 1:250000 topographic map sheet in the outback of Western Australia which has three features marked on it).
Nov 23, 2017 4:22 AM # 
j-man:
I'm really curious about the Harriman question, having considered it in the past. For J-J , the proof is left as an exercise, but my own guess is closer to the bottom end of Boris' range, perhaps even as little as 17 something... for isn't the longest transect from Sebago NE to Baileytown? Of course, admitting WP into the mix I think buys another 65%. Can someone QED this?
Nov 23, 2017 5:51 AM # 
Jagge:
Conspiracy theoretic in me thinks going beyond this magic 13589 km may be the real reason behind those Mars trip plans.
Nov 24, 2017 8:44 AM # 
bubo:
Any O maps on Mars yet, Jagge? Good enough footage for KP?
Nov 24, 2017 10:15 AM # 
Jagge:
You should ask Joakim or Mats about that. I have often had feeling they are not from this planet, so who knows.
Nov 24, 2017 11:02 PM # 
edwarddes:
On the WOC93 Harriman maps I was able to get an 8.4km leg going northwest to south east, from Surbridge to Jackie Jones. The limiting factor is getting it to line up within 100m of the road bridges across lake welch.
Diagonally across just Surebridge I could make a 7.5km leg.

Including some of the other HVO Harriman maps would probably make it longer, but I don't have any of those map files to test.
Nov 25, 2017 5:43 PM # 
Canadian:
We're able to get 10.5 ish in Gatineau Park in Ottawa. There's a 26km line we could do if we had maps all along the way. We have both ends and some a bunch in the middle but we're probably missing half of the distance. Would be super interesting to do though.
Nov 25, 2017 10:04 PM # 
Sandy:
It's just under 9km from one end of Spackman to the other end of Egypt Mills (Water Gap).
Nov 26, 2017 3:13 AM # 
j-man:
All we need is Loch Lomond.
Nov 26, 2017 5:08 AM # 
blairtrewin:
Our searching in Australia has found a 24km leg which is complete except for a 200m gap (which is on an MTBO map - does that count?). Jim Russell has said he's going to go out and map the gap...
Nov 29, 2017 3:41 AM # 
cmpbllv:
My local USMA map expert is coaching pre-algebra right now, will have to ask if he has an idea about the West Point maps later. Trophy Point to Turkey Hill Circle is roughly 14-15K, but I don't know the perimeter of the total mapped area to measure a longest leg.
Dec 1, 2017 9:14 AM # 
Eriol:
A map that possibly covers some of the 13589 km leg: https://www.nivut.org.il/english/MapInfo.aspx?id=6...
Dec 1, 2017 12:02 PM # 
bubo:
@Eriol
You want to complete the map and fieldwork the rest?
Dec 2, 2017 9:15 AM # 
Eriol:
Have already fieldchecked the part in downtown Niamey.

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